I am running a virtual host in Apache 2.0.55 using mod_ssl + OpenSSL
0.9.8aon Win 2k3 Server. It seems to truncate POST requests that
exceed a few
kilobytes.

Here is the scenario: Apache uses a rewrite / proxy rule to forward
requests to Zope:
RewriteRule /(.*)
[url]http://localhost:8080/VirtualHostBase/https/denproduction.fqdn:443/VirtualH=[/url]
ostRoot/$1
[P,L]<[url]http://localhost:8080/VirtualHostBase/https/denproduction.fqdn:443/Vi=[/url]
rtualHostRoot/$1%5BP,L%5D>
When this rule is applied to the Virtual Host on the secure port 443, there
is a limit to the size of the request variables that it will forward to
Zope. When it is applied to the Apache globally and requests are done over
port 80, any size variables will be passed to Zope. The large requests are
XML files, so I tried unsetting the LimitXMLRequestBody directive.